Mineral In A Matrix (Likely Quartz Or Feldspar)

Granite

Granite (Felsic Plutonic Rock)

Rhyolitic Tuff (Breccia Type)

Rhyolitic Pyroclastic Rock (Mixed Silicates including Quartz, Feldspar, and Volcanic Glass)

Quartz (River-worn Pebble)

Quartz (SiO2)

Turquoise (likely stabilized or Howlite/Magnesite imitation)

Hydrated phosphate of copper and aluminium, CuAl6(PO4)4(OH)8·4H2O

Chert with Quartz Veining

Silicon Dioxide (SiO2)

Yellow Aventurine

Quartzite with inclusions (SiO2)

Diorite

Diorite (Intermediate intrusive igneous rock)

Gneiss

Gneiss

Pink Feldspar (Orthoclase)

Orthoclase Feldspar (KAlSi3O8)

Milky Quartz with Iron Staining

Silicon Dioxide (SiO2)

Corundum

Corundum (Al2O3)

Sandstone with Iron Concretion

Arenite with Limonite/Goethite Concretion

Basalt with Quartz/Plagioclase Inclusions

Mafic volcanic rock (Basaltic)

Granite

Granite (Phaneritic Acidic Igneous Rock)

Chalcedony (River Stone)

Microcrystalline Quartz (SiO2)

Granite Cobble

Plutonic Granite

Granite (Pink/Red variety)

Phaneritic Felsic Intrusive Igneous Rock (composed primarily of Quartz, K-Feldspar, and Plagioclase)

Emerald in Matrix

Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities

Conglomerate

Conglomerate (clastic sedimentary rock)

Gneiss

Gneiss (High-grade Metamorphic Rock)

Arkosic Sandstone

Arkose

Quartz (Druzy)

Silicon Dioxide (SiO2)

Granite

Phaneritic Felsic Igneous Rock (Main minerals: SiO2, KAlSi3O8, NaAlSi3O8)

Garnet Schist or Garnet-bearing Quartzite

Metamorphic rock containing Almandine Garnet (Fe3Al2(SiO4)3) and Quartz (SiO2)

Titanium Aura Quartz (Bismuth-coated Druzy)

Silicon Dioxide (SiO2) with Titanium/Metal vapor coating

Granite

Phaneritic Felsic Igneous Rock (composed of SiO2, KAlSi3O8, NaAlSi3O8)

Greenschist (containing Epidote and Quartz)

Greenschist (Epidote-Chlorite-Actinolite Schist)

Peach Aventurine

Silicon Dioxide (SiO2) with inclusions

Dyed Dalmatian Jasper (Dalmatian Stone)

Perthitic Feldspar with Arfvedsonite inclusions

Diorite (Salt and Pepper Rock)

Phaneritic Plutonic Diorite; chemical composition roughly 52-63% silica (SiO2)

Green Aventurine

Silicon Dioxide (Quartz) with inclusions of Fuchsite mica; Chemical formula: SiO2 + K(Al,Cr)2AlSi3O10(OH)2

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

Granite

Phaneritic plutonic rock (Quartz, Feldspar, Mica)

Red Granite

Phaneritic Felsic Igneous Rock (composed of Quartz, Alkali Feldspar, and Plagioclase)

Granite

Phaneritic Plutonic Felsic Rock (KAlSi3O8 - SiO2 - NaAlSi3O8)

Milky Quartz/Clear Quartz Cluster

Silicon Dioxide (SiO2)

Granite or Granodiorite (Weathered)

Granite

Unakite

Epidotized Granite

Epidote with Feldspar/Quartz (Unakite-like)

Epidotized Granite (Ca2(Al,Fe)3(SiO4)3(OH) + KAlSi3O8)

Bicolor Quartz Pebble

Silicon Dioxide (SiO2) with mineral inclusions

Amazonite

Amazonite (KAlSi3O8) - a variety of Microcline Feldspar

Milky Quartz (Common Quartz)

Quartz (Silicon Dioxide, SiO2)